My favorites from the bunch --
For Internet SEO / marketing people:
From danpalmer -
How many SEO experts does it take to change a light bulb, lightbulb, light, bulb, lamp, lighting, switch, sex, xxx, hardcore? #nerdjokes
For Software / Database developers:
"A SQL query walks into a bar. He approaches two tables and says, Mind if I join you?"
Funny in General:
Now that I'm off the road and into a clean pair of pants, can someone tell me why it's legal to use screeching tires sound fx on the radio?
You can read 'em too - hope you find them as funny as I did.